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    Mod-Rewrite: duplicate content?


    Hi,

    I've done a mod-rewrite lately
    Before urls on my site were like this: /downloaddetail/number
    Now it's: /downloaddetail/number-programname

    Google is now indexing those new pages but you can still reach my site the old way
    Is this bad because of duplicate content google is indexing, or will the old pages disappear after a while because googlebot can't find them to visit anymore?
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    The duplicate content is not really a problem, provided you removed all links to the old-style pages (and replaced them with new-style URLs).

    It may take a while for the new URLs to get the ranking and PR of the old ones.

    In the mean time - you may find that Google sometimes lists the old version, and on other occasions the new one. Since both versions are your own, you probably won't lose a lot of traffic because of this (possible) dup penalty.

    If the pages in question don't have a lot of backlinks (so if their PR value is minimal), there's always the option to have them removed from the Google serps. However - if I were you, I wouldn't do that until the new ones have settled nicely
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    at the top of the script, you could check the current scipt/url ($PHP_SELF) and 301 redirect to the rewritten url.
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    I agree with Wit, Dont remove the old pages, I guess they are ranked well. Its no harm untill you dont have any links to the old pages from any of the pages in the site.

    And once you rank well with your new pages, you can remove the old ones and have a customised 404 page. Or just leave the old ones if they are still shown in SERPs.

    Good Luck.
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    I've seen a new url just beneath an old url on google today so I guess google is already indexing my new pages

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